What is a Heat Sink?

A heat sink is a common component for thermal management. Heat sinks are used in a variety of applications and industries and are usually made of aluminium, copper or ceramic.

Heat sinks are lightweight, easy to customize and can be produced in a range of profiles to offer the most effective cooling for the device. The basic design comprises of a flat base plate with a series of fins protruding from it to increase the overall surface area of the component. Heat sinks usually have straight fins, cross-cut fins, pin fins or flared pins.

How does a heat sink work?

Heat sinks dissipate heat from the source using the basic principles of conduction and convection. They have a large surface area where the heat is initially spread over before being transferred away from the heat source by the fins and the working fluid. The working fluid is usually air but may also be a non-conductive liquid. This process relies on the temperature gradient of the heat sink and the ambient temperature surrounding it.


Heat sinks can be defined as passive, active or hybrid with each set up offering its own advantages and considerations.

Passive heat sinks use natural convection, which means the density of the working fluid is enough to dissipate heat away from the heat sink without the need for additional components or systems to achieve cooling.

Active heat sinks use forced air to increase fluid flow across the heat sink, this is usually achieved by using a fan but can also be from movement of the component itself. Both approaches increase heat dissipation by allowing more unheated air to flow over the heat sink, increasing the total thermal gradient across the system.

Hybrid heat sinks combine elements from both passive and active heat sinks and utilise control systems to cool components. When the device reaches a set temperature the active cooling mechanism kicks in to return the device to its preferred temperature range, once cooling has been achieved the device reverts back to passive thermal management through the heat sink.

Attachment methods:

There are a number of methods used to fix the heat sink in place, these include thermal tapes such as the TG-T1000T which provides exceptional bonding properties and eliminates the need for mechanical fasteners whilst also offering flexibility for repositioning or reuse.

Read our guide on how to remove adhesive from heat sinks here.

Push pins with compression springs are usually used on larger heat sinks with higher preloads. The push pins have a flexible barb that pushes through a hole in the PCB and is then held in place by the springs.

Screws are usually used for very large heat sinks and usually comprise of a threaded standoffs with springs, this approach for fastening is the most costly.

In order to optimise the efficiency and performance of the heat sink and the device thermal interface materials such as putties, greases or pads can be used to provide a heat path between the device and the heat sink where microscopic air gaps and uneven surface texture impedes good thermal transfer.

Find out more:

T-Global Technology are experts in thermal management solutions, offering a wide range of off-the-shelf or customised products tailored to your requirements.

Use the links below to browse our product range, download our heat sink catalogue or contact us for a sample or more information.

Download our heat sink catalogue                              View our full product range                             Request a sample

Christmas Closure

T-Global Technology US and Europe would like to wish all our customers a Merry Christmas and a Happy New Year.

Christmas Closure 2022:

Our UK office will be closed for Christmas from 16:00 on Friday 23rd December 2022 and will reopen at 08:00 on Tuesday 3rd January 2023 inclusive, any messages received during this period will be prioritised upon our return.

Chinese New Year 2023:

Please note that there will be no shipping from 18th – 29th January 2023 inclusive due to Chinese New Year.

Thermal Interface Materials – New products and EoL notice

The continued advancement of the technology industry has seen a sharp rise in market demands for improved thermal management solutions which means current thermal interface materials are often subject to be scheduled for End of Life (EoL) as new products are brought to market.

T-Global Technology is committed to continually improving and developing its range of thermal interface materials to ensure our customers benefit from market leading solutions for their heat dissipation challenges.

Heat dissipation is a key area for many industries, manufacturers from a range of disciplines require higher performance products with increased conductivity, often coupled with the need for smaller components or surface areas to offer improved functionality, faster processing and extended life cycles.

Several new products are now available for samples or quotes via our product page and are listed in reverse chronological order with the newest items at the top of the page.

These include thermal pads, putties and compounds which will be succeeding historic products that are now nearing End of Life (EoL) and are not recommended for new design (NRND).

Below is a table outlining the materials planned for EoL with links to our recommended alternatives.

Product NRND (EoL) Alternative
H48-6S Thermal Conductive Pad TG-ALC /  GT10D
Li98 Thermal Tape TG-T1000
TG-AH482 Thermal Conductive Pad TG-A20KXTG-A3500
H48-2K Thermal Conductive Pad TG-ALC
TG-AH486 Thermal Conductive Pad TG-A38KX / TG-A3500
H48-6A Thermal Conductive Pad TG-A38KX
Li2000 Thermal Tape Li98C
Li2000A Thermal Tape Li98C
Li98P Thermal Tape Li98C
TG-A2030 Ultra Soft Thermal Conductive Pad TG-A2200/TG-A3500
TG-A4040 Ultra Soft Thermal Conductive Pad TG-A4500
TG-A404F Ultra Soft Thermal Conductive Pad TG-A4500F
TG4040LC Ultra Soft Thermal Conductive Pad TG-A4500F
TG-A6050 Ultra Soft Thermal Conductive Pad TG-A6200
TG832 Ultra Soft Thermal Conductive Pad TG-A6200
TGNSP36K Non-Silicone Putty TG-NSP35LV
TGNSP36K-1 Non-Silicone Putty TG-NSP35LV
TG-A126X Ultra Soft Thermal Conductive Pad TG-A1250
TG-AL373 Thermal Conductive Pad TG-A20KF / TG-A3500
TG-NSP35 Non-Silicone Thermal Putty TG-NSP35LV
TG-S606 Thermal Compound S606C
Liv2 Thermal Tape TG-T1000
TG-A373L Thermal Conductive Pad TG-A20KX
TG-A373S Thermal Conductive Pad TG-A3500
TG-AL375 Thermal Conductive Pad TG-A20KX
L37-5S Thermal Conductive Pad TG-A3500
H48-6G Thermal Conductive Pad TG-A6200/TG-A6200LC
TG-A373F Thermal Conductive Pad GT10D / TG-A20KF / TG-ALC 
TG-PP-10 Silicone Thermal Putty TG-A7000
GT Series Thermal Pad (GT15 / GT20 / GT30) GT10DTG-ALC / TG-A38KF / TG-A20KF
TG994 Thermal Conductive Pad TG-A1250

Customers are advised that if their preferred product is scheduled for EoL and is already being used in existing production lines to contact us for a repeat order and a member of our technical sales team will be more than happy to assist.

T-Global Technology Attends Electronica

Teams from T-Global Technology Taiwan and T-Global Technology Europe and North America were exhibiting at Electronica, the world’s leading electronics fair last week.

Electronica 22 Kimberly and Phil

Held at the Messe Munich Exhibition Centre in Germany, the event welcomed over 70,000 attendees from a wide variety of industries and the exhibition was supported by a full conference programme including breakout forums, expert panel discussions and keynote speakers.

Electronica 2022 showcased the complete range of technologies, products and solutions from across the entire electronics industry and was broken down into the following categories:

Automotive, displays, electromechanics and system periphery, electronic design, embedded systems, electronic manufacturing services, semiconductors, PCBs, test and measurement, micro and nano-systems, passive components, sensor technology, services, power supplies, system components and wireless communications.

Duncan Bell, Managing Director for T-Global Technology, Europe and North America shared his thoughts on the show, saying:

“Electronica enabled us to connect with prospective customers from across the globe and show them our range of state-of-the-art thermal interface materials. The event also provided us with the opportunity to reconnect with some of our existing customers and distributors to discuss the latest developments in thermal management. It was great to be back at an in-person event after a brief hiatus during the pandemic and we’re already looking forward to the next one.”

Electronica will run again in Munich, from 12-15 November 2024 but don’t worry if you missed us this time around, you can find out more about our product range and request a sample or quote via our contact form.

Notification of Material Part Numbers Change

T-Global Technology is currently in the process of rationalising our part/material numbering system as part of the introduction of a new internal system. This will simplify our internal processes and also allow us to align all of our products under generic umbrella certifications.

The change will affect the part numbers of a number of our legacy products. Newer products that already utilise the “TG-Axxxx” format will not be affected. The materials are listed below by their old descriptors together with the new name that will be used in future. Please note that if the part is not included in this list the name will not be changed:

For the foreseeable future, we will have the ability to process orders using either the old or new part number but we would ask that, where possible, the new number is used. During the transition, datasheets and other documents will reflect both. We understand that this will result in some of our customers having to change the details on their internal systems, drawings etc. so we would ask that you disseminate this information to all appropriate people within your organisation and your supply chain.

For existing requirements, we understand if customers wish to continue using the old numbers in the short term, but we ask that for all new requirements the new numbers are used. Over a period of time, the old numbers will then be withdrawn. All new quotations will be provided using the new part numbers, accompanied by a copy of this notice for clarification.
If you require any further information, please contact us on +44 1455 553510, sales@tglobaltechnology.com or orders@tglobaltechnology.com.

Duncan Bell
Managing Director

PDF Notice of Change of Material Part Number

T-Global Technology Launches New Global Logo and Brand

T-Global Technology are proud to announce the launch of a new company logo and mission statement as part of the ongoing growth and evolution of our company’s brand.

Our Mission Statement: “T-Global Technology focuses upon providing complete and comprehensive thermal management products and services, and to quickly help customers globally find the best thermal solution.”

As part of our mission, we will integrate our Taiwan, European and North American brands, and commit to continuous innovation and technological research and development. From 1st May 2020, T-Global Technology will update to our new brand, as shown on the left, and our original logos will gradually be discontinued.

Our business has grown and evolved over the years, and we felt it was time for a change. We have refreshed our logo to reflect who we are today and to symbolise our future. With greater investment in facilities and wholly incorporating our European team into the T-Global Technology group, we wanted our new brand to feel fresh, stylish and strong which reflects a more modern look and captures our continuing mission to deliver excellent quality and performance in our products with our eyes on the future and innovation just around the corner.

T-Global Technology is dedicated to the development, manufacture and research of thermal solution engineering and materials. We will integrate Taiwan and European brands and establish a brand-new brand identification system in 2020. We are determined to continue the research and promotion of innovative technology.

In the past, T-Global Technology did not have a brand identification design standard. The difference between Chinese and English fonts caused visual inconsistency.

Our new logo combines the two images with a circular arc in the rigidity of the design, showing the characteristics of the technology industry with a smooth and flexible service attitude.

The italic design represents fast service, without losing the stability of the company and has the image of thermal circulation and conduction flow.

The colour scheme retains the original blue of T-Global Technology and the orange of the European T-Global Technology branch. Blue represents the image of technology and speed. Orange represents the young and innovative personality of T-Global Technology.
The overall effect is more in line with the future trend of the smart industry.

We know this is a significant change, but our professional attitude and prompt service remains constant. “More innovation. Less heat.” Let’s lead the world in bringing new technologies and enhancing thermal engineering.

COVID-19 – Operational Status Update

COVID-19 Operational Status Update of T-Global Technology (Europe & North America) Limited
Issued 26th March 2020

Please find following the details of our current operational status in relation to the COVID-19 Coronavirus outbreak. This notice will be updated as and when there are changes to the current status.

The vast majority of parts we supply are produced from materials sourced from two factories – the primary one is located in Taiwan and the secondary one is located in Malaysia.

The factory in Taiwan is currently operating as normal, although they are taking all necessary measures and precautions as laid down by the Taiwanese authorities. There may currently be a slight impact on delivery times as a result of increased demand but we do not expect there to be any significant delays.

The factory in Malaysia is currently shut down, as are all factories in Malaysia. This shutdown is currently in force until 31st March, when it will be reviewed.

Both factories have all necessary raw materials and do not foresee any problems with obtaining future supplies as and when they need them. Manufacturing capacity and materials for manufacturing are available so the only limitations on our ability to continue to supply products will be driven by local government policy regarding whether the factories are permitted to remain open.

As stated, the majority of our parts are provided through our factory in Taiwan so supply of these parts is currently unaffected. Other parts that are provided by our factory in Malaysia are currently unavailable, although the factory is set up to be able to re-commence production as soon as it is considered safe to do so by the Malaysian Government. This factory is still providing administrative cover as key personnel are able to work from home, so orders may still be placed, however the quoted lead time will commence from the date that the factory re-opens. Products that are supplied from our factory in Malaysia are listed at the bottom of this message.

T-Global Technology (Europe & N. America) Ltd. operations are structured such that all staff have the ability to work from home with full functionality, and we have been doing so since 12th March in an effort to minimise the impact of the virus both amongst ourselves and within the wider community. The office is still manned in a safe manner to the extent that goods can still be received and despatched. This will continue for as long as it is deemed necessary by UK authorities.

We continue to operate in a manner that is as close to normal as possible and will continue to serve our customers in the way we always do, to the best of our abilities. If you have any specific questions regarding the effect the current situation may have on your products purchased from us, please do not hesitate to contact myself or any other member of the team.

Thank you for your understanding and for your continued custom.

Best regards,

Duncan Bell
General Manager
T-Global Technology (Europe & North America) Limited

Products Supplied from our Malaysian Factory
• S606P
• TG-PP10
• TGP27B
• TGP27P
• TG-CJP-12-Li98
• PC96
• PC98
• TG832
• TG994
• TG996
• TG997
• TG4040SA

Statement on the End of Life Status for TGX, TG2030, TG4040, and TG6050 from T-Global Technology

T-Global Technology’s new TG-A series range of silicone thermal pads is the next generation of thermal interface materials utilising the latest technology and processes. These pads offer superior performance at a reduced cost and supercede the TG series of thermal pads.

For this reason, T-Global Technology has decided to End of Life the TG series products in our distributor Digi-Key Electronics to promote the use of the TG-A series for new projects. The last buy date for TGX, TG2030, TG4040 and TG6050 silicone thermal pads through Digi-Key will be the 31st of December 2020. You may find a list of the affected Digi-Key parts and the recommended replacements here (Links open in new windows): TGX, TG2030, TG4040, and TG6050.

T-Global Technology will continue to support the TG series products beyond the end of 2020 for specific applications and existing projects. However, we encourage customers to sample and approve the new TG-A materials wherever possible.

We believe that innovation and product development are key to remaining relevant in the fast-moving technology sector. It is for these reasons that we develop and bring new products to market to support the growing demands of ever-increasing power densities.

For any further information regarding the end of life of TGX, TG2030, TG4040 and TG6050 or you have any concerns about the parts that you currently purchase from us, please contact us at sales@tglobaltechnology.com.

We thank you for your past business with us. We look forward to supporting you in 2020 and beyond.

T-Global Technology Sales Team
+44 (0)1455 553510

What is Hardness anyway?

When selecting a material based on hardness for thermal management, it is important to understand and appreciate the differences in these scales so that a material with the desired properties is selected.

Hardness is a physical property of a material and is defined as its resistance to indentation. It is typically used to quantify the hardness of polymers and elastomers and is an important factor in the performance of thermal interface materials.

Named after Albert Ferdinand Shore, the Shore hardness scales are an industry standard for measuring hardness of materials that vary all the way from gel like materials, up to hard plastics and rubbers. Since there is so much variation in the hardness of polymers and elastomers, there are different scales on which hardness is quantified.

The resistance to indentation (hardness) is measured by applying a known force onto the material using an indenter of specific geometry and measuring the resulting depth of penetration. The geometry of the indenter and the force applied are two of the test variables that are changed that give rise to the different Shore hardness scales.

Amongst the many Shore hardness scales are Shore OO and Shore A, primarily used for softer materials. These are the most common in the field of thermal management since soft materials carry with them several advantages over harder materials. However, the Shore OO and A scales use a different methodology. Therefore, they are not directly comparable. Although not directly comparable, it is common practice to use a basic table such as the one below to estimate the hardness across different scales.

All Shore hardness scales range from 0-100, the lower the number, the softer the material on the given scale.

For Sales queries, our clients can contact Edward Benson at sales@tglobaltechnology.com or by phoning +44(0) 1455 553 510.

Download the PDF